23b837c04bba901cd7e754e5977b6b15652d6c35ab9e28bc23ee6f38908ff0fc

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:23

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General

Target

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe
Size

73KB
MD5

120cf40975110d6da1ffaa4941acd20f
SHA1

4f6013f937c2c95f4ee834f6136e748d3c5d5dd2
SHA256

23b837c04bba901cd7e754e5977b6b15652d6c35ab9e28bc23ee6f38908ff0fc
SHA512

e45fca4bd6216ba25cadbf2793a774a493e34d3407e276f1a8cc522e3f47a46d660ab459c41fc94059c367e7fea9a0dcc491164f91a660fe7f735c46a5a3fe82
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMs2:u6QFElP6n+gWMOtEvwDpjJGYQb2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4292 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4292	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe

description	pid	process	target process
PID 1504 wrote to memory of 4292	1504	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe
PID 1504 wrote to memory of 4292	1504	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe
PID 1504 wrote to memory of 4292	1504	2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_120cf40975110d6da1ffaa4941acd20f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1504

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
73KB

MD5
f924fbb8e6a8d0ffd80e3253cd3d52e8

SHA1
1363c2258d36ce30252f862c0a72d4918d68fa2b

SHA256
b0cd2e8575fa92d62ae2a7cd4d38baa2de45444e95d8e0577e7626ea9aa18f72

SHA512
82ccbb6e8c937349d33bc847480a729e24b2f755a6d98aeb01c979729d0cfa94e410ddab874212a5ee0d2fcfa600370b6611a921aa0cae90458306b3237587ff

Download Submit
memory/1504-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1504-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1504-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4292-17-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4292-23-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download